Mouting Webfolder on Windows Server 2012

Hello Comunity,

I try to mount a Webfolder (Web Client Network?) on Windows Server 2012, but it doesn't work. I get the message

"System error 53 has occured. The network path was not found".

I use this command to mount it

net use \\sharepoint.server.tld\share

If I execute this command on a Windows 7 Client, it works. 

Can someone help me?

Note: I've already set the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters BasicAuthLevel to2 on the server.